Standard Shared Hosting: Understanding FTP and web site bandwidth limits
How do web site and FTP bandwidth limits work?
Note: this limit is not relevant to email-only hosting clients.
Your bandwidth limit represents how much data you expect people to download or upload from/to your site per month via HTTP or FTP. For almost all personal and business web sites--even if you have a lot of visitors, a lot of multimedia, or a lot of web sites--the default limit of 2,000 GB/month (2 TB/month) is probably more than enough to suit your needs.